Relation of the chemical abundances (oxygen abundance in the top panels and C/O in the bottom panels) with the mass-loading factor (left panels) and with burstiness (right panels). Our sample is divided into galaxies in which the broad component is blueshifted (blue crosses) or redshifted (red pentagons) or for which no broad component was detected (black squares). The dashed cyan lines are the mean value, and the shaded region is the mean observed scatter. Our sample is color-coded by Σ_SFR.